Problem 6. A laboratory experiment is set up to measure the pressure drop for water flowing through a smoothtube as shown. The tube has a diameter of 1.60 cm and a length of 3.50 m. The water enters the tube from areservoir through a square-edged entrance. The water exits the tube through an abrupt exit. (a) Calculate theaverage velocity and volumetric flow rate (in L/min) needed to obtain turbulent flow in the tube. (b) Calculate thereservoir height required to obtain turbulent flow in the tube.largetank of HwaterLDpipeflowNOTE: Many problems in Chapter 8 involve determination of the Moody friction factor, f, for turbulent flowwhich is a function of the Reynolds number, Red, and dimensionless roughness, e/D. For most calculations, fcan be determined using either (1) the Blasius correlation for low Red flow in smooth pipes, (2) a correlation forfully-turbulent flow for high Red flow in very rough pipes, or (3) read from the Moody Diagram (a plot of theColebrook correlation, which does not have a closed form solution). A more accurate approach for moderateRed flow in rough pipes is to iterate for f using the Colebrook correlation and an equation solver (such as inEES, Excel, or Matlab).

Answered: Image /qna-images/answer/8e0d6ea5-ccc9-433b-b8a4-dc3c52f92a90.jpg

Answered: Problem 6. A laboratory experiment is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The ethanol solution is pumped into a vessel 25 m above the reference point through a 25 mm diameter steel pipe at a rate of 10 m3 / hr. The pipe length is 35m and there are 2 elbows. Calculate the power requirements of the pump. The properties of the solution are density 975 kg / m3 and viscosity 4x 10-4 Pa s. a. Reynold number = Answer b. Loss of Energy along the straight pipe = Answer J / kg. c. Losing Energy at curves = Answer J / kg. d. Total energy to overcome friction = Answer J / kg. e. Energy to increase water according to height = Answer J / kg. f. The theoretical energy requirement of the pump ethanol / second = Answer J / kg. g. Actual pump power requirement = Answer watt.
The ethanol solution is pumped into a vessel 25 m above the reference point through a 25 mm diameter steel pipe at a rate of 8 m3/hour. The length of the pipe is 35m and there are 2 elbows. Calculate the pump power requirement. The properties of the solution are density 975 kg/m3 and viscosity 4x 10-4 Pa s. a. Reynolds number = b. Energy Loss along a straight pipe = J/kg. c. Energy Loss in turns = J/kg. d. Total energy to overcome friction = J/kg. e. Energy to raise water to height = J/kg. f. Theoretical energy requirement of the pump kg ethanol/second = J/kg. g. Actual pump power requirement = watt.
The air supply to an oil-engine is measured by being taken directly from the atmosphere into a large reservoir through a sharp-edged orifice 50 mm diameter. The pressure difference across the orifice is measured by an alcohol manometer set at a slope of arcsin 0.1 to the horizontal. Calculate the volume flow rate of air if the manometer reading is 271 mm, the relative density of alcohol is 0.80, the coefficient of discharge for the orifice is 0.602 and atmospheric pressure and temperature are respectively 755 mmHg and 15.8 °C. (You may assume R = 287 J · kg¯' ·K!.)
A fluid is flowing in a horizontal pipe 8 in. in diameter with a mean velocity of10 ft/s. The pressure at the center of the pipe is 5 psi, and the elevation of thepipe above the assumed datum is 15 ft. Compute the total head in feet if the fluid is (a) water, (b) oil (SG=0.8), and (c) molasses (SG=1.5).
Please solve and answer the question correctly please. Thank you!!
A 2-ft inner diameter (ID) metal pipe has a roughness ε = 0.003 ft, and carries water(μ = 1 cP) at 15 ft/s. A fellow engineer suggests that the flow rate could be increased using asmooth plastic liner (i.e., drawn tubing) that reduces the ID to 1.9 ft.(a) Calculate the pressure drop in psi/ft both without and with the liner at theoriginal volumetric flow rate. [ answers should be~ 0.016 psi/ft, ~ 0.01 psi/ft](b) Calculate the flow rate in gpm both without and with the liner if the pressure dropis maintained at 0.01 psi/ft in both cases. [answers should be~ 16,500 gpm, ~ 21,700 gpm
A hose pipe of 75 mm bore and length 450 m is supplied with water at 1.4 MPa. A nozzle at the outlet end of the pipe is 3 m above the level of the inlet end. If the jet from the nozzle is to reach a height of 35 m calculate the maximum diameter of the nozzle assuming that f 0.01 and that losses at inlet and in the nozzle are negligible. If the efficiency of the supply pump is 70% determine the power required to drive it.
Oil with SG = 0.9 and dynamic viscosity of 0.04 Pa-s flows at the rate of 60 liters per second through 50 of 120 mm diameter pipe connected in two reservoirs with pipe fittings: 1 globe valve; 1 gate valve % open; 4 standard elbows and two 45° elbow. If the head loss is 80 m, determine the velocity flow, the type of flow and the friction factor.
Consider water flowing through a water hose of length of 100 ft, diameter of 3/8 inch, and average surface roughness 5-105 ft. The gage pressure at the hose inlet is 40 psi. The hose contains a ball valve which controls the flow rate. Calculate the mass flow rate of water through the hose with the ball valve completely open and with ball valve 2/3 closed. Hint: Determining the friction factor requires an iterative approach - start the iterations by assuming that the friction factor is equal to 0.01 and perform at least 3 iterations.
A venturi meter of 20 mm throat diameter is used to measure. The velocity of water in a horizontal pipe of 40 mm diameter. If the pressure difference between the pipe and the throat sections is found to be 30 KPa then, neglecting frictional losses, the flow velocity is?
A water pump is used to pump the water to a large water tank as shown in Figure. The free surfaces of both water tanks are under atmospheric pressure. Dimensions and local losses are given below. The flow rate of the pump is determined as 16.2 L/min. Calculate the required manometric head of the pump and the required motor power if the total efficiency is 76.2 percent. The water at 10oC. density r = 996.2 kg/m3, dynamic viscosity µ = 1.362x10-3kg /ms. z2-z1 = 7.62 m (height difference), D = 2.62 cm (pipe diameter), L = 176.2 m (total pipe length), ɛ = 0.2562 mm (pipe roughness value) Local loss coefficients: KL,inlet = 0.562 (pipe inlet) KL,valve = 16.2 (valve), KL,elbow = 0.9262 (there are 5 elbows totally in pipe line), KL,outlet = 1.0562 (pipe outlet).
last three digits of your number for the upstream pressure: 754

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